Private bug reported:
There have been reports of fork() hangs on Lucid when running on EC2.
See this YouTube video for an example:
http://www.youtube.com/watch?v=rbURfuAmtXw
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-305-ec2 2.6.32-305.9
ProcVersionSignature: User Name 2.6.32-305.9-ec2 2.6.32.11+drm33.2
Uname: Linux 2.6.32-305-ec2 x86_64
Architecture: amd64
Date: Thu Jan 27 22:25:15 2011
Ec2AMI: ami-fd4aa494
Ec2AMIManifest:
ubuntu-images-us/ubuntu-lucid-10.04-amd64-server-20100427.1.manifest.xml
Ec2AvailabilityZone: us-east-1c
Ec2InstanceType: m1.xlarge
Ec2Kernel: aki-0b4aa462
Ec2Ramdisk: unavailable
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-ec2
** Affects: linux-ec2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ec2-images lucid
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https://bugs.launchpad.net/bugs/708920
Title:
Strange 'fork/clone' blocking behavior under high cpu usage on EC2
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